/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.geode.distributed.internal;

/**
 * Used to implement statistics on a queue.
 * The implementation will call these methods at to proper time.
 *
 *
 * @since GemFire 3.5
 */
public interface QueueStatHelper {

  /**
   * Called when an item is added to the queue.
   */
  public void add();
  /**
   * Called when an item is removed from the queue.
   */
  public void remove();
  /**
   * Called when count items are removed from the queue.
   */
  public void remove(int count);
}
